238961999286 has 128 divisors (see below), whose sum is σ = 554883840000. Its totient is φ = 76167786240.

The previous prime is 238961999189. The next prime is 238961999293. The reversal of 238961999286 is 682999169832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24307020 + ... + 24316848.

It is an arithmetic number, because the mean of its divisors is an integer number (4335030000).

Almost surely, 2^238961999286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238961999286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277441920000).

238961999286 is an abundant number, since it is smaller than the sum of its proper divisors (315921840714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238961999286 is a wasteful number, since it uses less digits than its factorization.

238961999286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10099 (or 10093 counting only the distinct ones).

The product of its digits is 181398528, while the sum is 72.

The spelling of 238961999286 in words is "two hundred thirty-eight billion, nine hundred sixty-one million, nine hundred ninety-nine thousand, two hundred eighty-six".